bg-img($url)
    background-image: url($url + "@2x.png")
    @media (-webkit-min-device-pixel-radio: 3),(min-device-pixel-radio: 3)
        background-image: url($url + "@3x.png")
no-wrap()
    text-overflow:ellipsis
    overflow: hidden
    white-space: nowrap

extend-click()
    position:relative
    &:before
        content: ''
        position: absolute
        top:-10px
        left:-10px
        right:-10px
        bottom:-10px